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Question 4
Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes:
Out come3 heads2 heads1 headNo headFrequency23727728
If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up.

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Solution

Number of times 2 heads come up =72
Total number of times the coins were tossed=200
P(2 heads will come up)=Number of times 2 heads come upTotal number of times the coins were tossed
P(2 heads will come up)=72200=925

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